78304965 has 8 divisors (see below), whose sum is σ = 125287968. Its totient is φ = 41762640.

The previous prime is 78304951. The next prime is 78304969. The reversal of 78304965 is 56940387.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78304965 - 2¹⁰ = 78303941 is a prime.

It is a super-2 number, since 2×78304965² = 12263335087302450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78304969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2610151 + ... + 2610180.

It is an arithmetic number, because the mean of its divisors is an integer number (15660996).

Almost surely, 2^78304965 is an apocalyptic number.

It is an amenable number.

78304965 is a deficient number, since it is larger than the sum of its proper divisors (46983003).

78304965 is a wasteful number, since it uses less digits than its factorization.

78304965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5220339.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 78304965 is about 8849.0092665789. The cubic root of 78304965 is about 427.8219864857.

The spelling of 78304965 in words is "seventy-eight million, three hundred four thousand, nine hundred sixty-five".